Pulley



W. H. DODGE. PULL Y.

No. 412,916. Patented Oct. 15, 18:89.

UNITED STATES PATnNT @rmcm IVALLACE H. DODGE, OF MISHAVVAKA, INDIANA.

PULLEY.

SPECIFICATION forming part of Letters Patent No. 412,916, dated October15, 1889.

Application filed June 5, 1889. $erial No. 813,154. (No model.)

To all whom it may concern.-

Be it known that I, WALLACE II. DODGE, of Mishawaka, in the county ofSt. Joseph, in the State of Indiana, have invented new and usefulImprovements in Separable Pulleys; and I do hereby declare that thefollowing is a full and accurate description of the same, referencebeing had to the accompanying drawings, wherein- Figure 1 is aperspective view of my pulley, one section being removed. Fig. 2 is asection in plane of revolution, showing a modified section.

In the patent granted to Dodge and Philion July 4, 1882, No. 260,462, amode of fastening the pulley upon the shaft by compression without theuse of keys or set-screws is described, and also a mode of adapting thesame pulley to shafts of various sizes by means of a system ofinterchangeable bushes. The compression therein described is secured bymeans of compression-bolts transverse to the axis, the line of divisionof the pulley being substantially in the plane of the axis, said boltspassing through the spoke-arms and having nuts clear within the rim.

I-Ieretofore it has been inconvenient to make pulleys with arms andseparate rim and small in diameter, whereby the clamping-bolts can bereached between the rim and arm.

The object of this improvement is to obviate this difficulty and enableme to make my pulley with separable parts joined together and clampedupon the shaft by means of bolts transverse to the shaft and muchsmaller in diameter than heretofore.

A is my pulley, which, for convenience, may be made with alternatelayers of wood glued or otherwise fastened together, with the grainalternately in difierent directions to obviate the liability to split,though it may be made from solid wood, or in any other suitable Waywhich for any reason may be preferred. This pulley-blank is then dividedon a line substantially in plane of the axis, though it is manifest theparts may be made separately and fitted together. The central. hole forbushing or for shaft is then bored. As

it is necessary that the bolts and nuts shall be Wholly concealed, oneor more pieces I) are then cut out from the periphery to furnishconcealed seats for the nuts. The directions of the boundaries of thepiece I) are such that the surfaces will come together again by movingsaid piece inward across the sawkerf. The directions of said boundariesare also such that when said pieces I) are in place one or more holesmay be bored in the ends of the pulley, having the axis in the line ofthe joint between said piece and the pulley, and a dowel-pin (Z or screwbeing inserted in said hole Will key said part in place. The heads ofthe clamping-bolts e may be concealed in one part of the pulley, or bothparts may have sections I) removed, if for any reason that should bepreferred. One or both of the opposing surfaces on the line ofseparation are cut away, as at f, nearly to the periphery, so that theclamping-bolts may act upon the bush to press it upon the shaft, whichit would not be able to do if said opposing surfaces of the pulleyshould come together before the requisite shaft-pressure had beenattained.

Having described my invention, I claim as new-- 1. A solid pulleyseparable on a line substantially in the plane of the axis, providedwith clamping-bolts transverse to said line of separation, and one ormore removable sections 1) to cover and conceal the nuts of saidclamping-bolts, said sections 17 having such boundary-dines that theymay be keyed in place by fastenings inserted from the ends, combinedwith the fastening-pins d, substantially as set forth.

2. A solid pulley separable on a line in the plane of the axis, orthereabout, having the opposing surfaces slightly separated, except nearthe periphery, clamping-bolts trans verse to said line of separation,one or more removable sections of the periphery to cover and concealsaid bolts, and removable fastenings inserted in the ends to retain saidsections, substantially as set forth.

8. The pulley A, divided substantially in the plane of the axis, withits opposing surfaces slightly out of contact, except near theperipheral section b and retaining-keys d, periphery, provided With oneor more removinserted from the end, substantially as set able pieces I)and dowel-keys d, the direction forth.

of the boundaries of said piece I) being such VVALLAGE H. DODGE. 5 thatit cannot move from its place when said Witnesses:

key is in place, substantially as set forth. OHAs. ENDLICH, 4. A pulleyA, provided With a removable W. B. HOSFORD.

